py : logging and flake8 suppression refactoring (#7081)

Set one as executable and add basicConfig()
to another. Also added noqa tag to test scripts.

convert-hf-to-gguf-update.py

@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+
 # This script downloads the tokenizer models of the specified models from Huggingface and
 # generates the get_vocab_base_pre() function for convert-hf-to-gguf.py
 #